Chair



8, 1950 J. N. KAHN 2,518,425

CHAIR Filed Jan. '3, 1945 4 INVENTOR.

BY i

: views, i Fig. l is front elevation of a chair embodying the present invention;

legs (Figs. 1 and 2).

able manner. rear legs II are shorter than the front legs I Patented Aug. 8, 1950 UNITED STATES PATENT OFFICE CHAIR Joseph Norman Kahn, St. Albans, N. Y., asslgnor of one-third to Edward J. Boss, Richmond Hill,

Application January 3, 1945, Serial No. 571,139

12 Claims. 1 This invention relates to chairs, and more particularly to chairs havingvertically adjustable seats.

One object of the present invention is to provide a chair having a seat supported therein in a novel manner whereby it may be quickly and easily l0cated and supported at various selected levels.

Another object of the invention is to provide a high chair constructed in a novel manner -whereby it may be readily adjusted to fit the needs of a growing child, or for children of various heights.

A further object is to provide a childs high chair having novel means for locking the seat when the same is read in connection with the" accompanying drawings. It is to be expressly understood, however, that the drawings are for the purpose of illustration only, and are not intended as a definition of the limits ofthe in-,,.

vention, reference for this latter purpose being" had primarily to the appended claims.

In the drawings, wherein like reference characters refer to like parts throughout the several Fig. 2 is a side elevation of the chair shown in Fig. 1; i

Secured to the upper ends of rear legs H, as by screws 15, is a back rest extending upwardly beyond said legs and beyond the tops of front legs Ill, and disposed at the same angle of rearward inclination as the latter. Secured in any suitable manner to the tops of front legs II) are arm rests ll extending rearwardly from said legs and having their opposite ends engaged in grooves it formed in back rest I6. Arm rests I! are secured to back rest IE, as by gluing, or in any other suitable manner, and provide additional supports for said back rest.

The front legs and the back rest 16 jointly support a seat l9 which is mounted thereon in a novel manner whereby said seat may be quickly and easily located at various selected levels to enable seating of the occupant at a comfortable, convenient or desired level. As shown more particularly in Figs. 1 to 4, seat l9 Wholly occupies the space between front legs l0, and is provided at its rear end with a plurality of transversely spaced and aligned dowel pins 20, four being shown, pressed and glued therein. Pins 2i) are adapted to be received in any one set of a plurality of vertically spaced sets of transversely aligned horizontal openings 2| formed in back rest it. Secured to underside of seat I 9, as by screws 22, adjacent the front and at opposite 'Fig. 3 is a detail top plan view of the seat shown in Figs. 1 and 2;

Fig. 4 is an enlarged horizontal section taken substantially on the line 4-4 of Fig. 2,looking in the direction of the arrows;

Fig. 5 is an enlarged fragmentary vertical sec,,

-tion taken substantially on the line 5-5 of Fig.

tion of the novel chair contemplated by the present invention, comprises a pair of transfversely spaced rearwardly inclined front legs l0,

and a pair of transversely spaced rear legs I I inclined toward each other and toward said front Legs ill and I l are connected together by a plurality of vertically spaced transverse rungs l2 and I3, respectively, and by a plurality of vertically spaced longitudinally extending rungs [4, said rungsbeing secured to said legs, as by gluing or in any other suit- As shown in Figs. 1 and 2, the

for purposes to be presently described.

sides thereof are two plate-like members 23 (Figs. 3 to 6) which project laterally beyond the sides of said seat. Members 23 are adapted to be engaged in one of a series of vertically spaced hori zontal grooves 24 formed in the inner sides of the front legs it. Grooves 24 correspond in number and in relative spacing to the number and spacing of the sets of openings 2| in back rest It, and extend through the entire width of said legs.

With the construction thus far described, seat is is initially installed by sliding it endwise rearwardly between the front legs it) from the front side of the chair, and is supported thereon by engaging pins 2!] in a set of openings 2| in back rest 15, and by engaging plate members 23 in a corresponding pair of grooves 24 in front legs Hi. When it is desired to adjust seat I 9 to a desired level, said seat is moved forwardly a distance suflicient to disengage pins 20 and plate members 23 from openings 2! and grooves 24, respectively. Thereupon seat 19 may be raised or lowered, as the case may be, to the desired level, and supported at said level by again moving said seat rearwardly and reengaging pins 2?! and plate members 23 in the selected set of openings 2! and corresponding grooves 24, respectively. In the illustrated embodiment of the invention, there are five sets of openings 2| in back rest 15, and five corresponding grooves 24in each front leg Hi. It will be understood that the number 1 There. is. thus provideda chair which, through :':do-Wel pins. tmembersmay be d-ispensed'with, and .rigidseat, supporting and locking members ma be :sub" stiti ted for the springwire members. For-.a

amaaazs 3 of sets of openings 2!, and the number of groove 24, as well as the number of dowel pins 20, may be variedgas desired.

NoveLme-ans are provided forwlockingiseat t9 in adjusted positions to prevent accidental endwise displacement of the same from the chair, said means also serving to support the seat in all its positions of adjustment. As herein shown, said. seat locking and supportingmeans preferably comprise two membersiiii (-Figs'.3 to-'6 .each formed from a straight piece of comparatively heavy spring Wire and coiled intermediate its ends as indicated at 25 providing a central'opening 2"! and two oppositely extending parallel portions 28 and 29.' Portion 28 of each member 25 is bent, at its. freeend to provide anangularly extended hook ,3-d,.-and portion 253 is. coiled, at. its

free end as. indicated at .35.

Resilient .membe1's .25 .are. ,pivotally mounted *onathe undersideofi seat. i9eadjacent,plate. memc ers: ilby screws 32. passingthrough the openings said. members .and threaded in .saidlseat.

.Thenecks-.3 Q. ofnmembers 25. are.- adapted to be M engaged inone of :aseries .of vertically spaced horiaontal cpenings.33 formed v-.in the rear side .of-{each frontleg iii. and equalin number and spacing to thenumber-and spacing of..grooves -.2-.i. and sets .of'openings 2|- Openings33 termi- --nate,in horizontal grcovessii Whichare adapted toreceive the straight ..portions,. 28 .of .members --Itwill.thusappearthat whenresilient. mem

.hersiZLa-re swung. toward the trontblegsf ill from enga ement further .supportseat t9 .inelevated -,=posi.ticn. Resilient members .25 .arelhel'd .under tension .inseat supporting po'sitionto' locki seat tit against accidental. endv/ise displacement. .TFor thisa'purposeg-seat 49 has threaded therein .two

.dovvnwardlyprojecting screws-3.5 to..therear of which-the portionsifi .of members-LZE-are-flexed,

shown inFig. 4,. by applyingrearward thumb ssureson coils-3|.

i the provision of a .vertically adjustable seat .and

shovel; supporting .and locking means therefor, ;;will have a prolonged, period of .useiulne'ss,-may she: used'with. utmost safety and. quickly adapted to fit theneeds of a growing child, orfor children 2-.01? various heights, tdseat-the same. at. comfort- -..able convenient-ior desired-levels. Additionally ,theseat maybe easily adjusted. by-any..one,p,er-'

.son without assistance and without the use .of

"any tools.

the parts, without departing from the spirit and scope of 'the invention, as will now be "cleari'to those skilled in the art. Forexample,screwsinserted through the openings in theiba-ck' 'restrand threaded into theseat maybe used instead: of the Also, the plate-like seatysupporting definition of the limits .of' the invention. referenceiishad; primarily. to the. appended claims.

.What vis claimedis:

" selected level.

1. A chair comprising a pair of transversely spaced front uprights, a pair of transversely .spacedi. rear uprights, means I for connecting said igpairs of uprights together andjfor connecting said front uprights with said rear uprights, a back rest secured to said rear uprights, a vertically adjustable seat, and means projecting rear- 'wardly and laterally beyond the rear and side .edges .oftheseatand having operative engage- ..ment.withsaidiback rest and front uprights, re-

legs, a vertically adjustable seat disposed between said front legs, means disposed parallel with theseat and rojecting beyond the rearand fside'edges thereof for supporting-said'seat'at *variouslev'elson saidback rest andsaid front "legs',-said projecting means having operativeengagement with recesses in said back-rest and said 'front'legs, and means for locking said seat at; any

3. Inia chair of the type having a pair of "transverselyspaccdfront legs, a-pair of trans- .versely spaced rear legs, and a back-rest secured to'sa-id; rear legs, the combination therewith-of 2.

- vertically adjustable seat, interfitting means on *jecting' beyond the side edges of the scatter supporting the front end of the latteron said front Iegs-at said levels, said projecting -means having. operative engagement with recesses in named means in seat supporting position.

said. seat and back rest for supporting the rear endmfsaidgseatat various levels on said back rest, means mounted on saidseat for movement relative to said front legs and said seat and. prosaidjfront legs, and meansfor holding said'last- 4. In achair of the type'having a pair'of transversely"spacedfront legs provided with a series of vertically spaced grooves in opposite sides thereof, and a pair of transversely spaced rear legs, the combinationtherewith-of a'*back rest secured to said rear legs; said-back rest having-a plurality of sets'of transversely spaced and aligned openings located intermediate-the side "edges thereof-and arranged insuperp'osed spaced relation, a vertically adjustable'seat, means ca-rried by said seat and projecting beyond the "rear edge-thereofand engageable in' a selected setcf said openings, and means carried by said seat and'engageable in' one 'of saidgrooves in each of spaced rearwardly inclined front legs having 1 a series of vertically spaced' -horizontal groove'sin mwardly facing:sides thereof, a pair oftransversely'spacedrear legs,.-an inclined backrrst secured? to' said: rear legs, said back-xreststhaving Lthe: same-rearward inclination as said front-legs :andgbeing provided-with a plurality-of .sets. of

:transversely aligned openings arranged insuperiposedspaced relation, a vertically adjustable ntseat, means for supporting said seat. at -.-var.ious .'.-leve1s comprising a plurality ofelongatedimem- Jeers; projecting beyondthe .rear edge. of the... seat receivablein .av selected set .of said. openings andsecuredto said seat, and. two members. piv- .otally; mounted. on..said.seat .and projecting fibeiyond the .side edges .thereof and engageablegin one of said grooves, in each of said front legs, and

means for holding said pivoted members in engagement with said grooves.

6. A chair comprising a pair of transversely spaced front legs having a series of vertically spaced grooves in inwardly facing sides thereof, a pair of transversely spaced rear legs, means for connecting said pairs of legs together and for connecting said front legs with said rear legs, a back rest secured to said rear legs, said back rest having a plurality of sets of transversely aligned openings arranged in superposed spaced relation, a vertically adjustable seat, means for supporting said seat at various levels comprising a plurality of elongated members projecting beyond the rear edge of the seat and receivable in a selected set of said openings and secured to said seat, and two resilient members pivotally mounted on said seat for swinging movement in a plane parallel with the plane of the seat and en.- gageable in one of said grooves in each of said front legs, and means for holding said resilient members under tension when engaged in said grooves as aforesaid. 7. A chair comprising a pair of transversely spaced front legs having a series of vertically spaced grooves in corresponding sides thereof, a pair of transversely spaced rear legs, means for connecting said pairs of legs together and for connecting said front legs with said rear legs, a back rest secured to said rear legs, said back rest having a plurality of sets of transversely aligned openings arranged in superposed spaced relation, a vertically adjustable seat, means for supporting said seat at various levels comprising a plurality of transversely spaced and aligned pins secured to said seat at the rear end thereof and engageable in a selected set of said openings, and two plate-like members secured to said seat adjacent the front and at opposite sides thereof and engageable in one of said grooves in each of said front legs, and means for locking said seat in adjusted positions.

8. A chair comprising a pair of transversely spaced front legs each having a series of vertically spaced horizontally disposed openings at one side thereof and terminating in horizontal grooves at said side, a pair of transversely spaced rear legs, means for connecting said pairs of legs together and for connecting said front legs with said rear legs, a back rest secured to said rear legs, said back rest having a plurality of sets of transversely aligned openings arranged in superposed spaced relation, a vertically adjustable seat, means for supporting said seat at various levels comprising a plurality of elongated members receivable in a selected set of said back rest openings and secured to said seat, two resilient members pivotally mounted on said seat and having portions engageable in one of said openings and grooves in each of said front legs, and means for holding said resilient members under tension when engaged in said leg openings and grooves as aforesaid.

9. A chair comprising a pair of transversely spaced front legs each having a series of vertically spaced horizontally disposed openin s in the rear side thereof and terminating in horizontal grooves in said side, and a series of vertically spaced horizontal grooves in the inner side thereof, a pair of transversely spaced rear legs. a back rest secured to said rear legs, said back rest having a plurality of sets of transversely aligned openings arranged in superposed spaced relation, a vertically adjustable seat, means for supporting said seat at various levels co p s g a plurality of spaced transversely aligned pins secured to said seat at the rear thereof and engageable in a selected set of said back rest openings, two plate-like members secured to said seat adjacent the front and at opposite sides thereof and engageable in one of said last-named grooves in each of said front legs, and two resilient members pivotally mounted on said seat adjacent said plate-like members and having portions engageable in one of said leg openings and associated groove in each of said front legs, and means on said seat for holding said resilient members under tension when engaged in the leg openings and grooves as aforesaid.

10. A chair seat having supporting means comprising a plurality of transversely spaced rearwardly projecting pins secured to said seat at the rear edge thereof, two plate members seecured to the underside of said seat adjacent the front and at opposite sides thereof, said plate members projecting laterall beyond said sides of the seat, and two resilient members pivotally mounted on the underside of said seat adjacent said plate members for swinging movement toward and away from the latter, said resilient members each being formed with a hook arranged to extend parallel with and laterally spaced from the plate member when swung towards the latter.

11.. A chair comprising an inclined back, spaced uprights disposed forwardly of said back and having inclination like that of the back, a seat having a side bevelled to conform to the back when assembled therewith, and means on and projecting laterally from the seat for cooperation with vertically spaced recesses in said back and uprights to support the seat at different heights in conforming and abutting relation to the back.

12. A chair comprising an inclined back rest, a support therefor, legs disposed forwardly of said support and having inclination like that of the back rest, a seat having a side bevelled to conform to the back rest when properly positioned, and means on and projecting laterally from said seat cooperating with vertically spaced recesses in said back rest and legs to support the seat selectively at different heights in conforming positions.

J. NORMAN KAHN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 328,181 Briggs Oct. 13, 1885 374,175 Davis Dec. 6, 1887 596,841 Von Behren Jan. 4, 1898 891,128 Ament June 16, 1908 908,653 Evans Jan. 5, 1909 944,445 Kohler Dec. 28, 1909 1,016,763 Nill Feb. 6, 1912 1,101,353 Tallman June 23, 1914 1,228,249 Sautier May 29, 1917 1,465,291 Walker Aug. 21, 1923 1,826,643 Anderson Oct. 6, 1931 FOREIGN PATENTS Number Country Date 9,723 Great Britain Aug. 15, 1885 89,390 Switzerland May 16, 1921 71,095 Austria Feb. 10, 1916 555,041 France Mar. 15, 1923 

